>>reporter: he lives across from where dennis lived for the past decade. were you aware of his past. >> yes, i was aware of the past but i figure he had, he had paid for his mistakes according to the law. >>reporter: dennis hats a violent criminal history including 2 kidnap and rape in 1965. kidnap and sexual assault in may of 1966. in august 1966 kidnap rip and murder of the 2 teens from pinole. and on august 3rd, 2 days later, kidnap and rape in pacifica. after his convictions stan worth made the following statements quote the fact is i did it. i'm guilty as charged and there is no doubt to that fact. and i had a fair impartial trial and swear that the conviction that has resulted in the sentence 0of death is valid. stan worth was initially stepsed to death but in 1970's california death penalty was overturned and his sentence reduced to life in prison. then he was granted parole in 1990. the family of cary well wair had he moved to virginia vallejo circulating fliers to neighbors near the killer home to make sure they knew of his violent past. >> it mak